I put anything Neal Morse related in that list. Mind you, I was absolutely gaga about Spock's Beard. After he left, I checked out his first three solo albums, and then called it quits. He is a very consistent songwriter, which however means that if you no longer connect with him, you're out for good.
Even worse, he is also very dominant, and so he tends to eventually usurp side projects he is in. Happened with FC, with Transatlantic, and of course NMB.
Other than that, yeah, of course DT to some degree. I mean, even though I was entirely on board with MM, with the 20/20 hindsight we have now, his approach to drumming cemented them into the "bigger, faster" mindset, whereas maybe a different drummer would have allowed them to start pivoting towards a more maintainable style. The way it is now, their shows become ever more constructed and rigid in order to cover up the clear signs of age. They play slower, tuned down, with backup voices ... It feels a bit like a race car that is being held together by an increasing amount of duct tape.